Applications of laser welding to electric connectors

2014 15th International Conference on Thermal, Mechanical and Mulit-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE) Pub Date : 2014-04-07 DOI:10.1109/EUROSIME.2014.6813764

C. Liao, Shih-Po Liu, K. Liao

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Abstract

Characteristics of a pulsed Nd:YAG laser spot-welding procedure applied to electronic connectors are investigated in the current study. A finite element analysis is carried out to evaluate the weld pool profile of SUS304 stainless steel sheets under various laser intensities. Bead shapes including the pool diameter and the penetration depth as well are predicted and compared with the associated experiments. The Gurson-type damage model is implemented into the numerical analysis to describe the failure of spot-welded structures. Different spot-welded specimens subjected to the tensile-dominated and shear-dominated loading conditions were conducted to verify the suitability of parameters implanted in the damage model. Structure strength of a stainless steel sheet assembled with a metallic shell of an electronic connector utilizing laser spot-welding is then examined, and results based on the simulation are in fair agreement with those based on the measurements.

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激光焊接在电连接器上的应用

研究了应用于电子连接器的脉冲Nd:YAG激光点焊工艺的特点。对SUS304不锈钢薄板在不同激光强度下的熔池形貌进行了有限元分析。预测了水珠的形状，包括池直径和穿透深度，并与相关实验进行了比较。将gurson型损伤模型应用于点焊结构破坏的数值分析中。为了验证所建立的损伤模型中参数的适用性，对拉伸主导和剪切主导加载条件下的不同点焊试件进行了实验研究。利用激光点焊技术对不锈钢板与电子连接器金属外壳组装的结构强度进行了检测，仿真结果与实测结果基本吻合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 15th International Conference on Thermal, Mechanical and Mulit-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE)

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